/*
 * This file is part of the eccOS Library.
 * Copyright (C) 2007.
 *
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 */
package org.openeccos.widgets;

import nextapp.echo2.app.RadioButton;
import nextapp.echo2.app.button.ButtonGroup;
import nextapp.echo2.app.event.ActionListener;

public class PDButtonGroup<T> extends ButtonGroup {

    public T getSelectedValue() {
    	for (PDRadioButton<T> rdo : getPDButtons()) {
            if (rdo.isSelected()) {
            	return rdo.getValue();
            }
        }
    	return null;
    }

    public PDRadioButton<T> createButton() {
    	return createButton(null, null);
    }

    public PDRadioButton<T> createButton(String caption) {
    	return createButton(null, caption);
    }

    public PDRadioButton<T> createButton(T value, String caption) {
    	PDRadioButton<T> btn = new PDRadioButton<T>(caption);
    	btn.setGroup(this);
    	btn.setValue(value);
    	return btn;
    }

    public void setSelectedValue(T value) {
    	if (value != null) {
	    	for (PDRadioButton<T> rdo : getPDButtons()) {
    			if (value.equals(rdo.getValue())) {
    				rdo.setSelected(true);
    				return;
    			}
	        }
    	}
    	getButtons()[0].setSelected(true);
    }

	public void addActionListener(ActionListener listener) {
    	for (PDRadioButton<T> rdo : getPDButtons()) {
    		rdo.addActionListener(listener);
    	}
	}

	public PDRadioButton<T>[] getPDButtons() {
		RadioButton[] btnSource = getButtons();
		PDRadioButton<T>[] btnTarget = new PDRadioButton[btnSource.length];
		for (int i = 0; i < btnTarget.length; i++) {
			btnTarget[i] = (PDRadioButton<T>)btnSource[i];
		}
		return btnTarget;
	}

	@Override
	public void addButton(RadioButton radioButton) {
		if (!(radioButton instanceof PDRadioButton)) {
			throw new IllegalArgumentException("Only PDRadioButton allowed");
		}
		super.addButton(radioButton);
	}
}
